Relay Coupler 2-fold ZRK-2L

Additional module Relay Coupler for safe switching of high inrush currents.

Quick Facts

  • 2 control inputs for coils
  • 2 circuits with load in rated current of 12A
  • switch-on peaks of 160A / 20ms or 780A / 200µs
  • tungsten contact

2-channel Relay Coupler with advance tungsten contact in DIN rail-mounting housing for switching very high inrush currents, especially with ECGs. Switching on luminaires with integrated ECGs can lead to very high switch-on peaks. A closing contact bounces a few times until it has closed properly. This creates electric arcs which can melt or destroy the contact surface slightly. If the closed contact cools down, welding occurs (and the contact remains stuck). In order to avoid sticking, relays with a leading tungsten contact are used. This allows inrush currents for incandescent lamps of 160 A / 20ms or for fluorescent lamps of 780 A / 200µs to be switched.

Electrical Data

Operating voltage 24V AC/DC
Power consumption typical 0.48W
Switching output 2 x 250V AC/12 A, 3000VA, AC1, 288mW
Switch-on peaks light bulbs: 160 A / < 20 ms, fluorescent lamps and LED: 780 A / < 200 μs
Mechanical life 5 x 10^6
Connection screw terminals 2.5mm²
Max. ambient temperature -20°C to +55°C
Storage temperature -30°C to +70°C
Humidity 1-90 % r. h. non-condensing
Protection class IP40
Voltage limitation class III
Pollution degree 2
Test voltage coil/contact 2.5kV

Design, Dimensions, Weight

Design DIN rail-mounting plastic housing light grey, snap-on on 35mm DIN rail 1 HP
Dimensions WxHxD 17.5x90x69.5mm
Weight 82g

Ordering Data and Conformity

Type designation ZRK-2L
Article no. RE-ZRK-2L
Make ISYnet
Conformity CE

Pin Assignment

2x 3-pole connector

A1 Channel 1 control 24V AC/DC
A2 Channel 1-2 control 24V AC/DC
A3 Channel 2 control 24V AC/DC

2x 3-pole connector

11 Channel 1 switching output 250V
14 Channel 1 switching output 250V
21 Channel 2 switching output 250V
24 Channel 2 switching output 250V




Article no.: RE-ZRK-2L

Additional module Relay Coupler for safe switching of high inrush currents.

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